﻿<!DOCTYPE html>
<HTML>
<HEAD>
  <TITLE> ZTREE DEMO - beforeExpand / onExpand && beforeCollapse / onCollapse</TITLE>
  <meta http-equiv="content-type" content="text/html; charset=UTF-8">
  <link rel="stylesheet" href="../../../css/demo.css" type="text/css">
  <link rel="stylesheet" href="../../../css/zTreeStyle/zTreeStyle.css" type="text/css">
  <script type="text/javascript" src="../../../js/jquery-1.4.4.min.js"></script>
  <script type="text/javascript" src="../../../js/jquery.ztree.core-3.5.js"></script>
  <!-- <script type="text/javascript" src="../../../js/jquery.ztree.excheck-3.5.js"></script>
  <script type="text/javascript" src="../../../js/jquery.ztree.exedit-3.5.js"></script>-->
  <SCRIPT type="text/javascript">
    <!--
    var setting = {
      view: {
        selectedMulti: false
      },
      data: {
        key: {
          title: "t"
        },
        simpleData: {
          enable: true
        }
      },
      callback: {
        beforeClick: beforeClick,
        beforeCollapse: beforeCollapse,
        beforeExpand: beforeExpand,
        onCollapse: onCollapse,
        onExpand: onExpand
      }
    };

    var zNodes = [
      { id: 1, pId: 0, name: "可折腾的父节点 1", t: "我很普通，随便 展开/折叠 我吧", open: true },
      { id: 11, pId: 1, name: "叶子节点 - 1", t: "我老爸很普通，随便折腾他吧" },
      { id: 12, pId: 1, name: "可折腾的父节点 2", t: "我和我老爸都很普通，随便折腾我和他吧" },
      { id: 121, pId: 12, name: "叶子节点 - 21", t: "我老爸很普通，随便折腾他吧" },
      { id: 122, pId: 12, name: "叶子节点 - 22", t: "我老爸很普通，随便折腾他吧" },
      { id: 123, pId: 12, name: "叶子节点 - 23", t: "我老爸很普通，随便折腾他吧" },
      { id: 13, pId: 1, name: "叶子节点 - 3", t: "我老爸很普通，随便折腾他吧" },
      { id: 2, pId: 0, name: "无法折叠的父节点", t: "休想让我折叠起来...除非你用 expandAll 方法", open: true, collapse: false },
      { id: 21, pId: 2, name: "叶子节点2 - 1", t: "哈哈哈，我老爸NB吧，不能折叠吧？" },
      { id: 22, pId: 2, name: "叶子节点2 - 2", t: "哈哈哈，我老爸NB吧，不能折叠吧？" },
      { id: 23, pId: 2, name: "叶子节点2 - 3", t: "哈哈哈，我老爸NB吧，不能折叠吧？" },
      { id: 3, pId: 0, name: "无法展开的父节点", t: "就凭你也想展开我？难呀...嘿嘿, 除非你用 expandAll 方法", open: false, expand: false },
      { id: 31, pId: 3, name: "叶子节点3 - 1", t: "居然让你看到了...莫非你用了全部节点展开？" },
      { id: 32, pId: 3, name: "叶子节点3 - 2", t: "居然让你看到了...莫非你用了全部节点展开？" },
      { id: 33, pId: 3, name: "叶子节点3 - 3", t: "居然让你看到了...莫非你用了全部节点展开？" },
      { id: 4, pId: 0, name: "空空的父节点 1", t: "一无所有...除了我自己", isParent: true, open: false }
    ];

    var log, className = "dark";

    function beforeClick(treeId, treeNode) {
      if (treeNode.isParent) {
        return true;
      } else {
        alert("这个 Demo 是用来测试 展开 / 折叠 的...\n\n去点击父节点吧... ");
        return false;
      }
    }

    function beforeCollapse(treeId, treeNode) {
      className = (className === "dark" ? "" : "dark");
      showLog("[ " + getTime() + " beforeCollapse ]&nbsp;&nbsp;&nbsp;&nbsp;" + treeNode.name);
      return (treeNode.collapse !== false);
    }

    function onCollapse(event, treeId, treeNode) {
      showLog("[ " + getTime() + " onCollapse ]&nbsp;&nbsp;&nbsp;&nbsp;" + treeNode.name);
    }

    function beforeExpand(treeId, treeNode) {
      className = (className === "dark" ? "" : "dark");
      showLog("[ " + getTime() + " beforeExpand ]&nbsp;&nbsp;&nbsp;&nbsp;" + treeNode.name);
      return (treeNode.expand !== false);
    }

    function onExpand(event, treeId, treeNode) {
      showLog("[ " + getTime() + " onExpand ]&nbsp;&nbsp;&nbsp;&nbsp;" + treeNode.name);
    }

    function showLog(str) {
      if (!log) log = $("#log");
      log.append("<li class='" + className + "'>" + str + "</li>");
      if (log.children("li").length > 8) {
        log.get(0).removeChild(log.children("li")[0]);
      }
    }

    function getTime() {
      var now = new Date(),
        h = now.getHours(),
        m = now.getMinutes(),
        s = now.getSeconds(),
        ms = now.getMilliseconds();
      return (h + ":" + m + ":" + s + " " + ms);
    }

    function expandNode(e) {
      var zTree = $.fn.zTree.getZTreeObj("treeDemo"),
        type = e.data.type,
        nodes = zTree.getSelectedNodes();
      if (type.indexOf("All") < 0 && nodes.length == 0) {
        alert("请先选择一个父节点");
      }

      if (type == "expandAll") {
        zTree.expandAll(true);
      } else if (type == "collapseAll") {
        zTree.expandAll(false);
      } else {
        var callbackFlag = $("#callbackTrigger").attr("checked");
        for (var i = 0, l = nodes.length; i < l; i++) {
          zTree.setting.view.fontCss = {};
          if (type == "expand") {
            zTree.expandNode(nodes[i], true, null, null, callbackFlag);
          } else if (type == "collapse") {
            zTree.expandNode(nodes[i], false, null, null, callbackFlag);
          } else if (type == "toggle") {
            zTree.expandNode(nodes[i], null, null, null, callbackFlag);
          } else if (type == "expandSon") {
            zTree.expandNode(nodes[i], true, true, null, callbackFlag);
          } else if (type == "collapseSon") {
            zTree.expandNode(nodes[i], false, true, null, callbackFlag);
          }
        }
      }
    }

    $(document).ready(function() {
      $.fn.zTree.init($("#treeDemo"), setting, zNodes);
      $("#expandBtn").bind("click", { type: "expand" }, expandNode);
      $("#collapseBtn").bind("click", { type: "collapse" }, expandNode);
      $("#toggleBtn").bind("click", { type: "toggle" }, expandNode);
      $("#expandSonBtn").bind("click", { type: "expandSon" }, expandNode);
      $("#collapseSonBtn").bind("click", { type: "collapseSon" }, expandNode);
      $("#expandAllBtn").bind("click", { type: "expandAll" }, expandNode);
      $("#collapseAllBtn").bind("click", { type: "collapseAll" }, expandNode);
    });
    //-->
  </SCRIPT>
</HEAD>

<BODY>
<h1>展开 / 折叠父节点控制</h1>
<h6>[ 文件路径: core/expand.html ]</h6>
<div class="content_wrap">
  <div class="zTreeDemoBackground left">
    <ul id="treeDemo" class="ztree"></ul>
  </div>
  <div class="right">
    <ul class="info">
      <li class="title">
        <h2>1、beforeCollapse / onCollapse<br/>&nbsp;&nbsp;beforeExpand / onExpand 事件回调函数控制
        </h2>
        <ul class="list">
          <li>利用 collapse / expand 事件回调函数 可以控制父节点是否允许 展开 / 折叠，这里简单演示如何监控此事件</li>
          <li>
          <p>
            试试看：<br/>
            &nbsp;&nbsp;&nbsp;&nbsp;<input type="checkbox" id="callbackTrigger" checked/> expandNode 方法是否触发 callback<br/>
            &nbsp;&nbsp;&nbsp;&nbsp;单个节点--[ <a id="expandBtn" href="#" title="不想展开我就不展开你..." onclick="return false;">展开</a> ]
            &nbsp;&nbsp;&nbsp;&nbsp;[ <a id="collapseBtn" href="#" title="不想折叠我就不折叠你..." onclick="return false;">折叠</a> ]
            &nbsp;&nbsp;&nbsp;&nbsp;[ <a id="toggleBtn" href="#" title="你想怎样？..." onclick="return false;">展开 / 折叠 切换</a> ]<br/>
            &nbsp;&nbsp;&nbsp;&nbsp;单个节点（包括子节点）--[ <a id="expandSonBtn" href="#" title="不想展开我就不展开你..." onclick="return false;">展开</a> ]
            &nbsp;&nbsp;&nbsp;&nbsp;[ <a id="collapseSonBtn" href="#" title="不想折叠我就不折叠你..." onclick="return false;">折叠</a> ]<br/>
            &nbsp;&nbsp;&nbsp;&nbsp;全部节点--[ <a id="expandAllBtn" href="#" title="不管你有多NB，统统都要听我的！！" onclick="return false;">展开</a> ]
            &nbsp;&nbsp;&nbsp;&nbsp;[ <a id="collapseAllBtn" href="#" title="不管你有多NB，统统都要听我的！！" onclick="return false;">折叠</a> ]
          </p>
          <li>
            <p>
              <span class="highlight_red">使用 zTreeObj.expandNode 方法，详细请参见 API 文档中的相关内容</span><br/>
              collapse / expand log:<br/>
              <ul id="log" class="log"></ul>
            </p>
          </li>
        </ul>
      </li>
      <li class="title">
        <h2>2、setting 配置信息说明</h2>
        <ul class="list">
          <li class="highlight_red">事件回调函数的使用，详细请参见 API 文档中 setting.callback 的相关内容</li>
          <li class="highlight_red">如果需要调整 展开 / 折叠 的动画效果， 详细请参见 API 文档中 setting.view.expandSpeed 的相关内容</li>
        </ul>
      </li>
      <li class="title">
        <h2>3、treeNode 节点数据说明</h2>
        <ul class="list">
          <li>对 节点数据 没有特殊要求，用户可以根据自己的需求添加自定义属性</li>
        </ul>
      </li>
    </ul>
  </div>
</div>
</BODY>
</HTML>